Adjustable Resistors

Adjustable resistors, also known as potentiometers, allow a degree of control over the resistance within a circuit. This gives them an advantage over other types of fixed resistor, depending on your needs.
They are composed of a fixed resistive element, and a slider that is able to pass along the element. This is what changes the resistance of the circuit, and it is usually controlled externally.

What are adjustable resistors used for?
Adjustable resistors are most commonly used for volume control in TV and radio. They can also be used as part of a light dimmer, to indirectly affect the level of light.

Types of adjustable resistor
Adjustable resistors largely vary based on material:

  • Wirewound adjustable resistors use a coil of resistance wire, and offer the highest performance.
  • Cermet adjustable resistors are composed of ceramic and metal. They can withstand high temperatures, and are often used in trimmer resistors.
  • Carbon composition adjustable resistors are some of the most common types used, as they are a good all-purpose resistor.
  • Conductive plastic adjustable resistors use conductive plastic ink, and have a low noise output.

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Description Price Resistance Tolerance Power Rating Temperature Coefficient Termination Style Package/Case Technology Mounting Style Case Style Series Dimensions Diameter Length Maximum Operating Temperature
RS庫存編號 788-7772
製造零件編號RSSD30250A1000JB06
BrandVishay
TWD1,931.00
單位
100 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 161-7569
製造零件編號ZC3/5-FT
BrandCressall
TWD5,681.00
單位
490 mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 330mm +50°C
RS庫存編號 161-7570
製造零件編號ZC3/6-FT
BrandCressall
TWD5,388.00
單位
650 mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 330mm +50°C
RS庫存編號 892-5746
製造零件編號D25K150E
BrandOhmite
TWD345.00
單位
150 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 161-7579
製造零件編號ZC6/9-FT
BrandCressall
TWD5,002.00
單位
2.53 Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS庫存編號 788-7788
製造零件編號RSSD30250A3300JB06
BrandVishay
TWD1,520.00
單位
330 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 893-0924
製造零件編號E300K6R3E
BrandOhmite
TWD1,058.00
單位
6 Ω ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS庫存編號 144-5506
製造零件編號D25K300E
TWD511.00
單位
300 Ω ±10% 25W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 50.8mm 14.3mm 50.8mm +350°C
RS庫存編號 161-7571
製造零件編號ZC3/8-FT
BrandCressall
TWD4,760.00
單位
840 mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 330mm +50°C
RS庫存編號 893-5092
製造零件編號D100K100K
BrandOhmite
TWD764.70
/個 (每包:25個)
單位
100 kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 892-6688
製造零件編號D50K400E
BrandOhmite
TWD493.00
單位
400 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS庫存編號 892-4822
製造零件編號D225K250E
BrandOhmite
TWD966.00
單位
250 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS庫存編號 892-5749
製造零件編號D12K10KE
BrandOhmite
TWD417.50
/個 (每包:25個)
單位
10 kΩ ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS庫存編號 161-7580
製造零件編號ZC6/10-FT
BrandCressall
TWD4,995.00
單位
3.96 Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS庫存編號 788-7790
製造零件編號RSSD30250A47R0JB06
BrandVishay
TWD2,388.00
單位
47 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS庫存編號 893-5096
製造零件編號D12K100
BrandOhmite
TWD416.40
/個 (每包:25個)
單位
100 Ω ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS庫存編號 892-4721
製造零件編號D100K1R0E
BrandOhmite
TWD927.00
單位
1 Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS庫存編號 788-7740
製造零件編號RSSD20117A4R70KB15
BrandVishay
TWD740.00
單位
4.7 Ω 10% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS庫存編號 892-4783
製造零件編號D12K500E
BrandOhmite
TWD427.00
單位
500 Ω ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS庫存編號 892-4743
製造零件編號D100K3R0E
BrandOhmite
TWD903.00
單位
3 Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C